// Js获取当前日期时间及其它操作

var myDate = new Date();
myDate.getYear(); //获取当前年份(2位)
myDate.getFullYear(); //获取完整的年份(4位,1970-????)
myDate.getMonth(); //获取当前月份(0-11,0代表1月)
myDate.getDate(); //获取当前日(1-31)
myDate.getDay(); //获取当前星期X(0-6,0代表星期天)
myDate.getTime(); //获取当前时间(从1970.1.1开始的毫秒数)
myDate.getHours(); //获取当前小时数(0-23)
myDate.getMinutes(); //获取当前分钟数(0-59)
myDate.getSeconds(); //获取当前秒数(0-59)
myDate.getMilliseconds(); //获取当前毫秒数(0-999)
var now = myDate.toLocaleDateString(); //获取当前日期
var mytime = myDate.toLocaleTimeString(); //获取当前时间

/*日期时间脚本库方法列表

Date.prototype.isLeapYear 判断闰年
Date.prototype.Format 日期格式化
Date.prototype.DateAdd 日期计算
Date.prototype.DateDiff 比较日期差
Date.prototype.toString 日期转字符串
Date.prototype.toArray 日期分割为数组
Date.prototype.DatePart 取日期的部分信息
Date.prototype.MaxDayOfDate 取日期所在月的最大天数
Date.prototype.WeekNumOfYear 判断日期所在年的第几周
StringToDate 字符串转日期型
IsValidDate 验证日期有效性
CheckDateTime 完整日期时间检查
daysBetween 日期天数差

js代码：*/

//---------------------------------------------------
// 判断闰年
//---------------------------------------------------
Date.prototype.isLeapYear = function () {
  return (
    0 == this.getYear() % 4 &&
    (this.getYear() % 100 != 0 || this.getYear() % 400 == 0)
  );
};

//---------------------------------------------------
// 日期格式化
// 格式 YYYY/yyyy/YY/yy 表示年份
// MM/M 月份
// W/w 星期
// dd/DD/d/D 日期
// hh/HH/h/H 时间
// mm/m 分钟
// ss/SS/s/S 秒
//---------------------------------------------------
Date.prototype.Format = function (formatStr) {
  var str = formatStr;
  var Week = ["日", "一", "二", "三", "四", "五", "六"];

  str = str.replace(/yyyy|YYYY/, this.getFullYear());
  str = str.replace(
    /yy|YY/,
    this.getYear() % 100 > 9
      ? (this.getYear() % 100).toString()
      : "0" + (this.getYear() % 100)
  );

  str = str.replace(
    /MM/,
    this.getMonth() > 9 ? this.getMonth().toString() : "0" + this.getMonth()
  );
  str = str.replace(/M/g, this.getMonth());

  str = str.replace(/w|W/g, Week[this.getDay()]);

  str = str.replace(
    /dd|DD/,
    this.getDate() > 9 ? this.getDate().toString() : "0" + this.getDate()
  );
  str = str.replace(/d|D/g, this.getDate());

  str = str.replace(
    /hh|HH/,
    this.getHours() > 9 ? this.getHours().toString() : "0" + this.getHours()
  );
  str = str.replace(/h|H/g, this.getHours());
  str = str.replace(
    /mm/,
    this.getMinutes() > 9
      ? this.getMinutes().toString()
      : "0" + this.getMinutes()
  );
  str = str.replace(/m/g, this.getMinutes());

  str = str.replace(
    /ss|SS/,
    this.getSeconds() > 9
      ? this.getSeconds().toString()
      : "0" + this.getSeconds()
  );
  str = str.replace(/s|S/g, this.getSeconds());

  return str;
};

//+---------------------------------------------------
//| 求两个时间的天数差 日期格式为 YYYY-MM-dd
//+---------------------------------------------------
/*function daysBetween(DateOne, DateTwo) {
  var OneMonth = DateOne.substring(5, DateOne.lastIndexOf("-"));
  var OneDay = DateOne.substring(DateOne.length, DateOne.lastIndexOf("-") + 1);
  var OneYear = DateOne.substring(0, DateOne.indexOf("-"));

  var TwoMonth = DateTwo.substring(5, DateTwo.lastIndexOf("-"));
  var TwoDay = DateTwo.substring(DateTwo.length, DateTwo.lastIndexOf("-") + 1);
  var TwoYear = DateTwo.substring(0, DateTwo.indexOf("-"));

  var cha =
    (Date.parse(OneMonth + "/" + OneDay + "/" + OneYear) -
      Date.parse(TwoMonth + "/" + TwoDay + "/" + TwoYear)) /
    86400000;
  return Math.abs(cha);
}*/

//+---------------------------------------------------
//| 日期计算
//+---------------------------------------------------
Date.prototype.DateAdd = function (strInterval, Number) {
  var dtTmp = this;
  switch (strInterval) {
    case "s":
      return new Date(Date.parse(dtTmp) + 1000 * Number);
    case "n":
      return new Date(Date.parse(dtTmp) + 60000 * Number);
    case "h":
      return new Date(Date.parse(dtTmp) + 3600000 * Number);
    case "d":
      return new Date(Date.parse(dtTmp) + 86400000 * Number);
    case "w":
      return new Date(Date.parse(dtTmp) + 86400000 * 7 * Number);
    case "q":
      return new Date(
        dtTmp.getFullYear(),
        dtTmp.getMonth() + Number * 3,
        dtTmp.getDate(),
        dtTmp.getHours(),
        dtTmp.getMinutes(),
        dtTmp.getSeconds()
      );
    case "m":
      return new Date(
        dtTmp.getFullYear(),
        dtTmp.getMonth() + Number,
        dtTmp.getDate(),
        dtTmp.getHours(),
        dtTmp.getMinutes(),
        dtTmp.getSeconds()
      );
    case "y":
      return new Date(
        dtTmp.getFullYear() + Number,
        dtTmp.getMonth(),
        dtTmp.getDate(),
        dtTmp.getHours(),
        dtTmp.getMinutes(),
        dtTmp.getSeconds()
      );
  }
};

//+---------------------------------------------------
//| 比较日期差 dtEnd 格式为日期型或者有效日期格式字符串
//+---------------------------------------------------
Date.prototype.DateDiff = function (strInterval, dtEnd) {
  var dtStart = this;
  if (typeof dtEnd == "string") {
    //如果是字符串转换为日期型
    dtEnd = StringToDate(dtEnd);
  }
  switch (strInterval) {
    case "s":
      return parseInt((dtEnd - dtStart) / 1000);
    case "n":
      return parseInt((dtEnd - dtStart) / 60000);
    case "h":
      return parseInt((dtEnd - dtStart) / 3600000);
    case "d":
      return parseInt((dtEnd - dtStart) / 86400000);
    case "w":
      return parseInt((dtEnd - dtStart) / (86400000 * 7));
    case "m":
      return (
        dtEnd.getMonth() +
        1 +
        (dtEnd.getFullYear() - dtStart.getFullYear()) * 12 -
        (dtStart.getMonth() + 1)
      );
    case "y":
      return dtEnd.getFullYear() - dtStart.getFullYear();
  }
};

//+---------------------------------------------------
//| 日期输出字符串，重载了系统的toString方法
//+---------------------------------------------------
Date.prototype.toString = function (showWeek) {
  var myDate = this;
  var str = myDate.toLocaleDateString();
  if (showWeek) {
    var Week = ["日", "一", "二", "三", "四", "五", "六"];
    str += " 星期" + Week[myDate.getDay()];
  }
  return str;
};

//+---------------------------------------------------
//| 日期合法性验证
//| 格式为：YYYY-MM-DD或YYYY/MM/DD
//+---------------------------------------------------
function IsValidDate(DateStr) {
  var sDate = DateStr.replace(/(^\s+|\s+$)/g, ""); //去两边空格;
  if (sDate == "") return true;
  //如果格式满足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替换为''
  //数据库中，合法日期可以是:YYYY-MM/DD(2003-3/21),数据库会自动转换为YYYY-MM-DD格式
  var s = sDate.replace(
    /[\d]{ 4,4 }[\-/]{ 1 }[\d]{ 1,2 }[\-/]{ 1 }[\d]{ 1,2 }/g,
    ""
  );
  if (s == "") {
    //说明格式满足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-D
    var t = new Date(sDate.replace(/\-/g, "/"));
    var ar = sDate.split(/[-/:]/);
    if (
      ar[0] != t.getYear() ||
      ar[1] != t.getMonth() + 1 ||
      ar[2] != t.getDate()
    ) {
      //alert('错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。');
      return false;
    }
  } else {
    //alert('错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。');
    return false;
  }
  return true;
}

//+---------------------------------------------------
//| 日期时间检查
//| 格式为：YYYY-MM-DD HH:MM:SS
//+---------------------------------------------------
function CheckDateTime(str) {
  var reg = /^(\d+)-(\d{ 1,2 })-(\d{ 1,2 }) (\d{ 1,2 }):(\d{ 1,2 }):(\d{ 1,2 })$/;
  var r = str.match(reg);
  if (r == null) return false;
  r[2] = r[2] - 1;
  var d = new Date(r[1], r[2], r[3], r[4], r[5], r[6]);
  if (d.getFullYear() != r[1]) return false;
  if (d.getMonth() != r[2]) return false;
  if (d.getDate() != r[3]) return false;
  if (d.getHours() != r[4]) return false;
  if (d.getMinutes() != r[5]) return false;
  if (d.getSeconds() != r[6]) return false;
  return true;
}

//+---------------------------------------------------
//| 把日期分割成数组
//+---------------------------------------------------
Date.prototype.toArray = function () {
  var myDate = this;
  var myArray = Array();
  myArray[0] = myDate.getFullYear();
  myArray[1] = myDate.getMonth();
  myArray[2] = myDate.getDate();
  myArray[3] = myDate.getHours();
  myArray[4] = myDate.getMinutes();
  myArray[5] = myDate.getSeconds();
  return myArray;
};

//+---------------------------------------------------
//| 取得日期数据信息
//| 参数 interval 表示数据类型
//| y 年 m月 d日 w星期 ww周 h时 n分 s秒
//+---------------------------------------------------
/*Date.prototype.DatePart = function(interval)  
{   
    var myDate = this;  
    var partStr='';  
    var Week = ['日','一','二','三','四','五','六'];  
    switch (interval)  
    {   
        case 'y' :partStr = myDate.getFullYear();break;  
        case 'm' :partStr = myDate.getMonth()+1;break;  
        case 'd' :partStr = myDate.getDate();break;  
        case 'w' :partStr = Week[myDate.getDay()];break;  
        case 'ww' :partStr = myDate.WeekNumOfYear();break;  
        case 'h' :partStr = myDate.getHours();break;  
        case 'n' :partStr = myDate.getMinutes();break;  
        case 's' :partStr = myDate.getSeconds();break;  
    }  
    return partStr;  
}  */

//+---------------------------------------------------
//| 取得当前日期所在月的最大天数
//+---------------------------------------------------
Date.prototype.MaxDayOfDate = function () {
  var myDate = this;
  var ary = myDate.toArray();
  var date1 = new Date(ary[0], ary[1] + 1, 1);
  var date2 = date1.dateAdd(1, "m", 1);
  var result = dateDiff(date1.Format("yyyy-MM-dd"), date2.Format("yyyy-MM-dd"));
  return result;
};

//+---------------------------------------------------
//| 取得当前日期所在周是一年中的第几周
//+---------------------------------------------------
/*Date.prototype.WeekNumOfYear = function()  
{   
    var myDate = this;  
    var ary = myDate.toArray();  
    var year = ary[0];  
    var month = ary[1]+1;  
    var day = ary[2];  
    document.write('< script language=VBScript\> \n');  
    document.write('myDate = Datue(''+month+'-'+day+'-'+year+'') \n');  
    // document.write('result = DatePart('ww', myDate) \n');  
    document.write(' \n');  
    return result;  
}  */

//+---------------------------------------------------
//| 字符串转成日期类型
//| 格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/dd YYYY-MM-dd
//+---------------------------------------------------
function StringToDate(DateStr) {
  var converted = Date.parse(DateStr);
  var myDate = new Date(converted);
  if (isNaN(myDate)) {
    //var delimCahar = DateStr.indexOf('/')!=-1?'/':'-';
    var arys = DateStr.split("-");
    myDate = new Date(arys[0], --arys[1], arys[2]);
  }
  return myDate;
}

// 若要显示:当前日期加时间(如:2009-06-12 12:00)

function CurentTime() {
  var now = new Date();

  var year = now.getFullYear(); //年
  var month = now.getMonth() + 1; //月
  var day = now.getDate(); //日

  var hh = now.getHours(); //时
  var mm = now.getMinutes(); //分
  var ss = now.getSeconds(); //秒
  var clock = year + "年";

  if (month < 10) clock += "0";

  clock += month + "月";

  if (day < 10) clock += "0";

  clock += day + "日" + "\xa0";

  if (hh < 10) clock += "0";

  clock += hh + ":";
  if (mm < 10) clock += "0";
  clock += mm + ":";
  if (ss < 10) clock += "0";
  clock += ss;
  return clock;
}
